<template>
  <MenuItem
    :name="item.path"
    v-if="!menuHasChildren(item) && getShowMenu"
    v-bind="$props"
    :class="getLevelClass"
  >
    <Icon v-if="getIcon" :icon="getIcon" :size="16" />
    <div v-if="collapsedShowTitle && getIsCollapseParent" class="mt-1 collapse-title">
      {{ getI18nName }}
    </div>
    <template #title>
      <span :class="['ml-2', `${prefixCls}-sub-title`]">
        {{ getI18nName }}
      </span>
      <SimpleMenuTag :item="item" :collapseParent="getIsCollapseParent" />
    </template>
  </MenuItem>
  <SubMenu
    :name="item.path"
    v-if="menuHasChildren(item) && getShowMenu"
    :class="[getLevelClass, theme]"
    :collapsedShowTitle="collapsedShowTitle"
  >
    <template #title>
      <Icon v-if="getIcon" :icon="getIcon" :size="16" />

      <div v-if="collapsedShowTitle && getIsCollapseParent" class="mt-2 collapse-title">
        {{ getI18nName }}
      </div>

      <span v-show="getShowSubTitle" :class="['ml-2', `${prefixCls}-sub-title`]">
        {{ getI18nName }}
      </span>
      <SimpleMenuTag :item="item" :collapseParent="!!collapse && !!parent" />
    </template>
    <template
      v-for="childrenItem in item.children || []"
      :key="childrenItem.paramPath || childrenItem.path"
    >
      <SimpleSubMenu v-bind="$props" :item="childrenItem" :parent="false" />
    </template>
  </SubMenu>
</template>
<script lang="ts">
import type { PropType } from "vue";
import type { Menu } from "/@/router/Types";
import { defineComponent, computed } from "vue";
import { useDesign } from "/@/hooks/web/UseDesign";
import { Icon } from "/@/components/general/Icon";
import MenuItem from "./components/MenuItem.vue";
import SubMenu from "./components/SubMenuItem.vue";
import { propTypes } from "/@/utils/PropTypes";
import { useI18n } from "/@/hooks/web/UseI18n";
import { createAsyncComponent } from "/@/utils/factory/CreateAsyncComponent";

export default defineComponent({
  name: "SimpleSubMenu",
  components: {
    SubMenu,
    MenuItem,
    SimpleMenuTag: createAsyncComponent(() => import("./SimpleMenuTag.vue")),
    Icon
  },
  props: {
    item: {
      type: Object as PropType<Menu>,
      default: () => ({})
    },
    parent: propTypes.bool,
    collapsedShowTitle: propTypes.bool,
    collapse: propTypes.bool,
    theme: propTypes.oneOf(["dark", "light"])
  },
  setup(props) {
    const { t } = useI18n();
    const { prefixCls } = useDesign("simple-menu");

    const getShowMenu = computed(() => !props.item?.meta?.hideMenu);
    const getIcon = computed(() => props.item?.icon);
    const getI18nName = computed(() => t(props.item?.name));
    const getShowSubTitle = computed(() => !props.collapse || !props.parent);
    const getIsCollapseParent = computed(() => !!props.collapse && !!props.parent);
    const getLevelClass = computed(() => {
      return [
        {
          [`${prefixCls}__parent`]: props.parent,
          [`${prefixCls}__children`]: !props.parent
        }
      ];
    });

    function menuHasChildren(menuTreeItem: Menu): boolean {
      return (
        !menuTreeItem.meta?.hideChildrenInMenu &&
        Reflect.has(menuTreeItem, "children") &&
        !!menuTreeItem.children &&
        menuTreeItem.children.length > 0
      );
    }

    return {
      prefixCls,
      menuHasChildren,
      getShowMenu,
      getIcon,
      getI18nName,
      getShowSubTitle,
      getLevelClass,
      getIsCollapseParent
    };
  }
});
</script>
